Signaling-horn.



c. H. SMITH.

SIGNAL'ING HORN. APPLICATION FILED NDV. |913.

Patented Ouct. y23, 1917.

IZzF/ES Z M QIILmemSlu-Dw and member 2 to be fastened to said front plate' State of Illinois,

'UNITED STATES PATENT OFFICE.

CHARLES H. siurrn, or CHICAGO,

ILLINOIS, ASSIGNOB TO KELLOGG SWITCHBOARD AND SUPPLY COMPANY, 0F CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

sIcNALING-HORN.

Specification of Letters Patent.

Patented Oct. 23, 1917.

Application filed November 8, 1913. Serial No. 799,842.

To all whom t may concern.'

Be it known that I CHARLES H. SMITH, a citizen of the United States of America, residing in Chicago, county of Cook, and have invented certain new and useful Improvements in Signaling- Horns, of which the following is a specification.

My invention relates to signaling devices and has to do more particularly with devices of the character generally employed 4as Warning signals for automobiles, motorcycles,` etc., and more automobile horns. vention are to provide a signaling device having an improved and simplified arrangement of its operating and condenser' elements, being of substantial construction cheap to manufacture. Other features of my invention will be more fully described in the following specification.

For a more complete ui derstanding of my invention, reference ma be had to the commonly known as accompanying drawing in 'which like ref-- erence characters denote like parts and in which- Figure 1 is a rear elevation of the preferred embodiment of my invention with its cap removed;

Fig. 2 is a sectional View on the line 2, 2 of Fig. l looking in the direction of the arrow indicated thereon;

Fig. 3 is a transverse sectional view of the shell; magnet and condenser along the line 3, 3 'of Fig. 2;

Fig. 4 1s a sectional View on the line 4, 4I

of Fig. 1 looking in the direction of the arrows indicated thereon, illustrating fastening means for the bridged spring member. i

Fig. 5 is a side View of a portion of the 'bridging member' shown in section in Fig. 4.

Fig. 6 is a sectional view on the line 6, G of Fig 1, illustrating the mounting means of the interrupter. 4

Fig` 7 is a circuit diagramadapted for the device illustrated in Figs. 1 to 6.

Referring noW more in detail to the construction of he preferred embodiment of my invention, it comprises a frontplate 1, circular in shape, being so drawn and formed as to allow the shell or cup-shaped 1, in any suitable manner, preferably as ring 4 has ears 5, 6

The objects of my in-v ring-shaped member 4 is fastened to the vupper portion of the shell 2, in any suitable manner, being preferably driven "11. The and 7 extending upwardly, being bent outwardly at right angles to fori-"f a mounting and fastening means .or ine bridged retractile spring member S. The upwardly extending ear 7 affords -a fastening the said plate 9 carrying the adju-Stable contact screw 10 and the interrupter A. rThe lplate 9 is fastened to the ear 7 by means of the screws 11, being suitably insulated from the ear 7. i I

A face plate 12 is provided which fits over the circular front plate 1, the face plate 12' and the front plate l having aplurality of holes 13 through which the clamping screws 14 pass to firmly clamp the thin metal diaphragm 15 and the two washers 16 between the front plate 1 and the face plate 12 by means of the nuts 141. The Washers 16 are made of any suitable material but I preferably use a material of cork composition as it is resilient, and allows a greater amplitude of vibration than a hard substance, as metal.v The face plate 12 has 'a bell or horn 17 attached to it in any suitable manner. An opening 18 is located below the hel] or horn 17, which allows Water or any other foreign material to be expelled, which may have entered through the bell or horn 17. An outer casing 19 fits in the angular portion of the front plate 12 and may be held securely in place in any suitable manner.

The electromagnet 2O and condenser 21 are housed in the shell 2, the electromagnet 20 being preferably made up of a single winding. The core 22 of the'magnet 20 has avthreaded end 221 extending through the shell 2 and the front plate l. A washer 23- means for the plate 9,

is'placed between the plate 1 and the nut 24 and the nut'24 is then screwed down to firmly hold the magnet Q0. in the shell 2. The shell 2 serves. as a containing member for the magnet 20 and condenser 21, and. also acts as a pole piece therefor. whenthe said magnet is energized to attract its arinsulating bushings 26 which are fittedf-ins The vothetfend oaf the shell 2 and front'plate 1, the said winding terminals being then brought out and attached to their respective binding posts. The condenser 21 is ring-shaped andiormed to itarunvd the magnet 20. In a horn in which a oridenser is used it is usually made as ay separate element` and in designing apparates one must take into consideration the placing of theconde'nser. As a'eondenser is usually bulky it takes up considerable space thus increasing'V ing dvice. The method I employ in loca/b ing t e condenser inthe shell 2 around the magnet 20 reduces the size of the apparatus considerably. making a compact containing member of the shell 2 and also doing away' up uw. remaining spate in the-shui. The

I terminals of the condenser. extend up through the armature. .2 5 .and asy the armeture is circular in form'and of the same size as the periphery of the shell, notches 25l are-cut in the periphery: of the armature to low the terminals 'of the con denser to." lmoughtcu't.

The .core .'22 ci the magnet has 'an opening 22 through. its center extendingthe lengthT of the-cone. This opening-- permits the 'hammer rod27 ,to vthrough it to operate lthe diaphragm in response -to the vibration of the mature .25. Bushings -28 messi; inthe ends ef the Vact asbcarings forthe hammer nod. The-Lemmer rod ingt strip l 29 is-placed between tiwo pieces passedtthreuzh the saidcpntactsprngfand Drecfcfgtinsnlation, and-chemie the 4sine ofthe signal.

the' is .threadid -15 through-.themanatnre 25.. Almonta'cthrellkf' ceive the screws 34. A clam ing plate 35 whose ends are bent at rig t angles, is placed over the metal strips 83 and a washer 36 is placed between said clamping plate 555 and the screw 34.

I provide an intenrupter A comprising a Vibratile Contact spring 37 and an adjust-- able stationary contact Al0 threaded into the supporting piece 9 and locked in adjustment by the lock-nut B8. Spring 37 is attached to the plate 9 and is held in place by theclelnping screws 39.

Fig. 5 is a sectional view through the center of the clamping. screws 39 and illustrates the-method in which the contacts yare insulatingly mounted. Fig. 2 is a sectional View mnd shows how the plate 94 is insulated from the ear extension 7 of the ring member 4. A terminal 40 and washer 41 are secured in electrical rcontact with the sta tionary contact screw 10 and a terminal 42 is provided Iwhich is secured in electrical Contact with the vibratile. spring contact piece 3 7. l provide a set of binding posts 47 and 48 which .may be fastened to the front plate. 1 in any suitable manner and :insulated therefrom. The binding posts serve astiastenifng means for the terminals of .the leads ilmtextend to fthe operating switch or bunt'on .743', 44

Referring ,to Fig. 7, I illustrstte diagrammaltically 'a circuit arrangement for the signaling de-vicc.- As illustrated, it compl'lses a -setof controlling .contacts 42o and 44mm ralmtery -45 included in circuit with the Winding 46 of the magnet 20. The ap,- paretus is `illustrated ydingraxiomatically, the like 4reference characters denoting like parts.

In. the present embodiment .of my inw/.em tion I l-meiferablgy 'gime a normal exure 'to thespring Stand diephmgm l5, .and when contacts 43, 44 are closed -anmmhn'me 25 is.

attracted increasing thev exure of :dia-

plimlgm l5 elo-that when :contacts It), B7 ane:

interrupted, the electromagnet 'is .d ener- .gzed allowingthe-retnarction of armature 25.1bgy the Aactioznoi spring 8 and diaphragm \15 luntl'cts .10,817 vclosed Ant 'whichfftime theelotromagncteisonee more Y energized- In this way magnet 46 is intermillhentlylllimzed'bofcwuse willie vibration of diaphragm lieto prodncefthe-:seund sucht 'as is. common rto. devi-ces.- mf; 'this .chal-amor.

Aasffwelalkmmnt isnfelectrcmagnets which' require a comparatively large current andulrwhioh the circuiti fis rapidly v intenrupted, ihene 'risia spanikingfdf 4'the contacts.

when mms-.the simil, so rngmlrecondenser 21-fisncoimectnadr4 in respect to said plate and firmly secured thereto, an electromagnet within said casing and having its core in magnetic relation to the said casing whereby `said casing serres as a magnetic pole for said magnet, anarmature for said magnet, a pair of de pendent ears extending from said casing for supporting a bridged retractile spring,

connecting means forsaid diaphragm and armature extending through Athe center of the magnet core, said connecting means serving to connect sai'd armature to Said bridged rctractile spring, and a third ear extending fronrl said caisnlg Supporting an lnterrupter contact ,controlled by said armature.

signaling device including a dia"4 phragm, a circularfront plate ,to which said diaphragm is secured, a cylindrical cup-' shaped casing provided 4with ham.integrally formed wall and bottom' 'securely ffastened'- to" said plate, a magnet positioned within said casing provided with a core extending through the bottom of said easing and plate whereby said casing 'forms a magnetic pole for said magnet, a ring shaped collar secured to the free extremity of said casing, a pair of ears integrally formed with said collar fon supporting an' armature, a third ear carrying van interruptor contact, and connecting means forsaid armature and dia phragn extendingtlirough the core of said magnet. f

3. A device ofthe character describe/din- ,cluding a circular front platea cylindri- 'cal cup-shapedcasing secured to said plate,

an electromagnet located within said casing, a. condenser positioned between said magnet and Said casing, and a cylindrical collar secured to said casing providedwith V three`dependent ears. two ofsaid cars supporting an armature for said magnet and th(` other of said ears carryingan- Interrupter-eontact. f' ,f r

4. A signaling horn including a diaphragm, a circular cup-shaped mounting plate to ,whichsaid diaphragm is secured. a cylindrical easing provided with integrally formed side piece and bottom firmly secured to said plate, a magnet situated Within sald casing and `having its core ex-i Itending through said plate and firmly secured thereto, a cylindrical condenser ly ing between the Wall of4 said easing and said electromagne't,l an armature operatively related to said magnet and extending over the edge of the wall of said casing, a cylindrical collar carried by said casing for sup porting said armature, and connecting means for said armature and diaphragm extending through an openlng 1n the magnet said ring shaped member, and an armature carried by said-` bridged member for controlling -a diaphragm operating member.

(LA signaling hwn comprising a dia.-

phragm, suitable rsupporting means therefor including a front plaie. :t cylindrical cupshaped casing inhaperipherally positioned with respect to said plate, an electromagnet located within said easing andhaving. its core at a right angle to the diaphragm and extending through the bottom of said cas' ing and .said--front plate,` a pair of integrally formed'. supporting members @Matched to the vrear of said casing for supporting va bridged spring member, an armature opera. tively related to said magnet and'casing, a connecting member connecting said armafzloo ture to said bridged'spring member and exthreaded and extended .through an' aperlplate, a nut i ture in said casing fanvdfront for the threaded portionof sai core to seeurely hold said corein position, a cylindrif cal condenser positioned between said, ele'etromagnet andthe wall of said v"casing, an' armature suitably positioned in operative relation'to the free` end of the ma et core Aand the .wall of said casing, arma ure and 'contact supporting'ineans carried by the' Tree-end of said casing, and a connecting member extending through an orifice in said 4core connecting said diaphragm to said armature. i 8;' A device ofthe character described in cluding a. circular front plate, areylindrical cup-shaped casing secured to said plate, an electromagnet centrally located within said casing, a core for said electromagnet having 13( said casing, a bridge member supppgtedgby' its enefendipr-nvidedfwiftbthreads-end exp1ate, n condenser positioned between said {1 -riding: through; au orijie in2- sa|idcnsin magnet and said casing4 an armature for 35 nnd-fr0nt-plute51anutyfor engagement Wit said electromugnety a pairI of interruptor lha thieadeclfpontien ofrsuideene-tu securely. ,c0ntacts acylindrical collar secured to said i, )mln-l, the onrein plafcegn-r-ingshaped-*concnsing-- provided with dependent ears for dene-en positioned between suid-ielectronnL-g supporting said armature andsad internet; undltbewalll of seid esi-sing; means' serupter contacts, and an operatingmember 40- eured twsaflv casing, for supportingdia- Connecting said armature to said diaphragm plungm. epoxi-tingI armature, :mdeonnectextending-.through the-core oisaidmagnet.4

.l0-ing means extending tlirougl] un orificein 11. A signaling horn including n circular said eoie-.-cennecting saidarmature to said frontA plate, a cylindrical easlng having a, diaphragm rearwardly extendmgfopen cup 'rmly se 45.

9; A signaling devieeofthechnrar de- Gured'to smidfront plate, an-Yelectrornagneb scribed including-- weil-'cular ront-plate,; ai loca-ted within said Casin gll1aviIig.-a. core-ex- .15'1 mlp-shapedf casing,intra-peiriplierally postending through an o ce-in said# Casin honed im respect to.A said; plate and firmly and front plate,'a, condenser between sai wou-red' therete,-. nn. `electx-omwgne't located electromagnet and the wall'of said cs'ng, 50 within smidmnsing and-having a core extend-V arr-armature for said electromagnet, ai ring ingV thrmrghan .oriieef inA sazid casing and sha ednlember seuredf tothe free end of 20 frontpmt'e, rt-@ondensen positioned between sai4 easingua bridgedv member Supported by said magnet :md safidfcasing, nn' armature saidring-shnped member to'whchthe said y im-saiflelectromagnetg 'n pairwif interrupter armature attached, and an operating 55 conta-etsyandn cylindrealuollsxr securedto4 men'ilael:- Yconxmetllg s afi'd-mrmatnretosad Suid cusing provided with dependentl mrsA 'diaphragm-supportedby saidbridg'ed mernp f5 for supporting-z said armature mid-said inber., n' lerrupter con-tama Si ed'bymoat-Chi l(ntoounty-oj Cooklil A-'signasling devine o'f the cheracter and tateof Illinois; int e-presence uftwoj- 60 

